Nut-lock.



UNITED STATES PATENT CFFICE.

DAVID W. MARTIN, OF PORTAGE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO GUSTAV H. R. GROKE, OF SAME PLACE. p

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No.-682,876, dated September 17, 1901,.

Application filed August 8, 1901. Serial No. 71.349. (No model.)

To all whom t may concern:

Be it known that I, DAVID W. MARTIN, a citizen of the United States, residing at Portage, in the county of Cambria and State of Pennsylvania, have invented a new and usefulNut-Lock,of which the following is a speciiication.

This invention relates to nut-locks, and is designed to provide for locking a nut against accidental displacement by jarring movements and the like of the part to which the nut is applied and also to arrange for the convenient application and removal of the locking device without damage to the bolt and nut.

It is furthermore designed to provide Va locking device which is complete in itself, so

that it may be strong and durable and also.

inexpensively produced.

Another obj ect resides in arranging for two forms of the device, one to lock a single nut and the other to lock a plurality of nuts without making any considerable change in ,the latter form of the invention.

A final object resides in providing for a c'ooperation between the locking device and the surface against which it is to lie, so as to prevent displacement of the device from the milt and to obviate turning thereof upon the bo t.

With these and other objects in viewthe present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings,and particularly pointed out in the appended claims,.it being understood that changes in the form,proportion, size, and minor details may be made Within the scope of the claims without departing from the lspirit or sacrificing any of the advantages of the invention.

In the drawings, Figure l is a perspective View illustrating the application of the present invention to lock a single nut. Fig. 2 is a sectional view taken in the direction of the bolt. Fig. 3 is a plan view of the blank from `which the locking ,device is formed. Fig. 4 is a detail perspective View of the locking device. Fig. 5 is an elevation showing the i11- vention applied to lock a plurality of nuts.

Fig. 6 is a detail perspective View of the latter form of locking-washer. 7

Like characters of reference designate coryl responding parts in all the figures of the drawh ings.

3 and 4: of the drawings, it will be seen that .55 Referring at first more particularly to Figs.

the present nut-locking washer embodies two `V members, designated, respectively, by the numerals l and 2, of which the member l forms the body portion and is somewhat larger than the member 2, which is adapted to be folded over across the back of the body portion along the line of connection between the two members, so that the respective opena ings 3 and 4 may register. The opening in the member 2 is preferably circular, so as to form a bolt-opening, while the opening 3 is 4 vide lockingwings or fingers 5, and said mem ber is preferably bowed transversely, so as to give the required spring or elasticity to said wings or fingers. It will be understood that the washer is normally fiat, and the members are bent or folded during the application of the device to a bolt and nut. f

In applying the device, as best shown in Figs. l and 2 of the drawings, the'member 2 is appliedl to the projected end of a bolt 6, after which the nut 7 is set tightly against said member and then the body portion l is bent over, preferably in a downward direction, until the nut is snugly seated in the opening or seat 3, and finally the corner wings or projections are snapped into suitable sockets or seats 8, produced in the plate or surface 9, against which the Washer bears, said recesses being formed by a chisel or other irnplement just prior to thev application of the Washer to the bolt. It will now be observed that the member 2 is rigidly clamped between the nut and the part which carries the bolt, whereby the washer is held against displacement, and the spring projections are snapped into the sockets or seats, so as to prevent rotation of the washer and also to obviate outward displacement of the member l from the IOO nut, whereby the latter is eifectually held against accidental turning upon the bolt by reason of jarring movements of the part to which it is applied. To unlock the nut, it is merely necessary to force the spring fingers or projections out of engagement with the seats in the surface 9, which operation may be conveniently performed by inserting any suitable implement between the outer bowed free edge of the member l. and the part 9 and then prying the member 1 outwardly to displace the projections from their engagement with the surface 9, and iinally bending the member l so as to expose the nut, whereby the latter is free, as may be readily understood.

rlo accommodate the device to a plurality of 'adjacent nuts-as, for instance, in a railjointthe member l is extended to any suitable length, as indicated in Figs. 5 and 6, and is provided with a plurality of polygonal openings or seats 3. Instead of having a single member 2 extended for the entire length of the member 1, I prefer to employtwo such members 2, having the usual bolt-openings,

. so as to receive a pair of bolts in the manner described for the first form of the device.

The outer corners of the member 1 have the locking projections 5, asin the first form, and it is apparent that both forms of the invention are applied in substantially the same manner.

From the foregoing description it will be noted that the only difference between the two forms resides in providing one of the forms with a single nutreceiving seat or opening and providing the other form with a plurality of such seats, and also in providing the modified form with terminal bolt-receiving members, so as to obviate a long single member, and thereby materially reduce `the weight of the washer.

The present device is designed to be formed from such strong sheet metal as is capable of being bent or folded in applying and removing the device and also which is capable of being bowed to give the required elasticity to the nut-engaging member in order that the locking projections may be spiunginto locked engagement with the part that carries the bolt and also maintained in elfective engagement therewith.

What I claim is- 1. A nut-lock comprising opposite members which are foldably connected and provided with corresponding openings, one of which openings is polygonal in shape and also larger than the other, the member having the polygonal opening being provided with means to coperate with the surface against which it is to lie and have an interlocked engagement therewith to prevent separation of the members.

2. A nut-lock comprising opposite members which are foldably connected and also provided with corresponding openings, one of which openings is polygonal in shape, and the member having the polygonal opening being provided at opposite sides with lateral locks ing projections.

3. A nut-locking washer formed from a sin gle blank of metal and having opposite members which are capable of being folded over toward each other, and also provided with openings which are constructed to register when the members are folded,one of said openings being polygonal in shape, and the member having thepolygonal opening being provided at its outer corners with lateral locking projections.

4. The combination with a member having a bolt-opening, a bolt projected through the opening, and a nut applied to the projected end of the bolt, of a nut-locking washer having a part which is provided with a boltopen ing and is located between the member and the nut, and also having a locking part which is folded over toward the first-mentioned part and is provided with a polygonal opening or seat snugly receiving the nut, the outer corners of this latter part being provided with sprin g projections that are snapped into sockets or seats formed in the adjacent su rface of the member which carries the bolt.

5. A nut-locking washer consisting of a plate which is folded to form opposite members, said members being provided with registered openings, one of which openings is polygonal in shape, the member which has the polygonal opening being provided with lateral corner projections, and said member also being bowed intermediately of the projections to give elasticity thereto.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

DAVID W. MARTIN.

Witnesses:

J. S. WILLIS, J P. CONLEY.

IOC 

